Characteristics of Thermal Decomposition of YIG Powders Synthesized from Chloride Salt by Homogeneous Precipitation

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J. Korean Ceram. Soc. > Volume 33(9); 1996 > Article

Journal of the Korean Ceramic Society 1996;33(9): 1031.

균일침전법에 의해 염산염으로부터 제조된 YIG 분말의 열분해 특성

안영수, 한문희, 김종오¹

한국에너지기술연구소 에너지재료연구팀
¹충남대학교 재료공학과

Characteristics of Thermal Decomposition of YIG Powders Synthesized from Chloride Salt by Homogeneous Precipitation

ABSTRACT

YIG precursor particles were synthesized by homogeneous precipitation via the thermal decomposition of urea in metal chloride salt solution. The precursor particles formed consisted of yttrium hydroxyl carbonate containing some hydrate and chloride ions together with iron oxyhydroxide. Even though the obvious exotherm and endotherm reactions did not appear in the thermal analysis of the precursor particles thermal decomposition of the particles was proceeded by continuous reaction of step-wise stage ; dehydratrion phase transition of iron oxyhydroxide to oxide. With increasing the heat-treatment temperature. YIG crystalli-zation proceeded by solid state reaction between intermediate YFeO3 and Fe2O3 above at 85$0^{circ}C$

Key words: YIG(Yttrium Iron Garnet), Synthesis, Homogeneous precipitation, Thermal decomposition, Urea